Process and apparatus for testing water for decoloration.



No. 814,036. A 'PATENTED MAR. 6, 1906.

L. GERARD.

PROCESS AND APPARATUS FOR TESTING WATER POR DECOLORATION.

APPLICATION FILED JUNB14, 1905.

AMA AIl l inspected. .at any time.

UNITED STATES PATENT OFFICE LEON GERARD, or BRUSSELS, BELGrUM,ASsiGNoR To PEaoY THOMPSON,y

or EAST ORANGE, NEW JERSEY.

PROCESS AND APPARATUS FQR TESTING WATER FOR DECOLORATION.

Patented March 6, 1906.

.Tolatl/ whom t may concern,.- Be it known that I, LEON GERARD, a sub` ject of the Kin of Belgium, residing at Brussels, Belgium, have invented a new and useinl Process and Apparatus for Testing Water for Decoloration, of which the follow-ing is a description.. y It is important in water-purifying plants to he able to readily test the urified water to determine its condition wit respect to discoloration. and also to automatically make a' record ci tests of this character which can be The efect4 of the purifying process upon the water if properly groups.

conducted should result in its deceleration and especially in the removal of pigments which produce rays of the yellow and red I utilize this fact to test and record the color of the Water by photographic means consisting in assing light through a constant column of t 1e water upon a photographic sensitive surface which, in order to produce a continuous record, is caused to travel at a constant speed. The presence of the yellow or red discoloration in the water prevents the passage of the actinic rays, while the absence of this discoloration permits the passage of such rays which affect the photographicallyf y sensitive surface. The traveling ksensitive surface may be in the form of a stri of sensitiaed paper, which will be carried orward in the apparatus through developing and baths,

In the drawing the iigure illustrates dia-` grammatically one means of carrying out the invention.

l is a vessel which is open at the top and closed at the bottom, its bottom having a glazed` o iening 2, through which the light can pass. he water enters the top of the vessel through a pipe 3, connected with the outlet of the watcr-puriifier, and leaves thevessel at its bottom through a pipe 4, which is slightly smaller than the pi e* 3, so as to produce a slight flow constant y through the 'overflowpipe 5, 'thus maintaining a constant levelof the water. The source of' light 6 may bea Nernst lamp or other source giving a constant white light and provided with a suitable reflector to give a rejection of the light-rays in parallel lines. eneath the vessel 1 travels a stri i of sensitized -a er 7,which may be, and pre erably is, fed. lhrward constantly by means of a suitable clockwork. The light from the source 6 passes downwardly through the column of'water and through the glazed opening 2 and a suitable lens 8 to focus the li ht upon the sensitive strip 7 producing a plgiotographic result which is dependent upon the degree of decoloration ofthe water. The

water flows constantly through the vessel l from the water-purifier, so that the water in the vessel represents from time to time the condition of the water treated by the purifying operation,'and the strip of sensitive paper is -fed forward continuously, so as to furnish a 7continuous record of the tion. i

What l claim isv l. vThe process of testing Water for decoloration consisting in passing light through a column or layer of the waterupon a photoigraplhic sensitive surface, substantially as set ort i 2. The process of testing water for decoloration consistingin causing the Water to iiow continuously t ough a layer or column of constant depth, and assing.' light through said layer or column o? water upon aphoto-l raphic sensitive surface, substantially asset ort 3. The process of testing water for decoloration consistin in causing the Water to flow continuously t irough a layer or column of constant depth, assing light through said layer or column o' water upon a photographic sensitive surface, and changing the sensitive .degree of decolorasurface with a constant rate of progression,

substantially as set -forth.

4. An apparatus for testing water for decoloration having in combination a column or layer of water, a source of light located so i that rays therefrom will passthrough the water, and a photographic .sensitive surface pon which such rays are received, substantially as set forth. y

An apparatus for testing water for decoloration having in combination a layer or' column of water, means for causing the water .to continuously flow through sald layer or 6. Ali apperatus for testing Water for dey surface upon which such rays are received, coloration having in combination a layer or v column of Water, means for causing the Water This specification signed and witnessed to continuously flow through said layer or this 12th day of June, 1905. column While maintaining a constant depth,' 'LEON GERARD.

a source of light located so as to pass rays Witnesses: therefromqthrough said layer or column of JAS. F.COLEMAN, Water, and a traveling photographic sensitive JOHN S. LOTSCH.

substantially as set forth. I0v 

